Cylinder welding tool

Abstract

The utility model discloses a cylinder welding tool which comprises a supporting shaft, an inner shaping assembly and an outer shaping assembly, the outer shaping assembly is arranged on the periphery of the inner shaping assembly in a sleeved mode at intervals, a cylinder can be placed between the inner shaping assembly and the outer shaping assembly, and the outer side face of the inner shaping assembly is used for supporting and shaping the inner side face of the cylinder. The inner side face of the outer shaping assembly is used for holding and shaping the outer side face of the cylinder, and a welding space is formed in the outer shaping assembly. When the cylinder is rolled, a thin plate is wrapped on the outer side of the inner shaping assembly, the inner shaping assembly can shape the shape and size of the cylinder on the inner side, then the outer shaping assembly is used for tightly holding and fixing the thin plate on the outer side, meanwhile, the welding space is kept away to expose a welding seam of the cylinder, welding is not affected, and the thin plate is tightly attached to the inner shaping assembly; according to the cylinder welding tool, the shape and size required by the cylinder are kept in the welding process, so that deformation of the cylinder in the welding process is reduced, the precision of the welded cylinder is improved, and the cylinder welding tool is simple in structure and low in production cost.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and in particular to a cylindrical welding tooling. Background Technology

[0002] When rolling thin plates into cylinders, the plates must first be bent into a circle, and then the butt joints are welded together to form the cylinder. Currently, without tooling to fix the thin plates, the deformation from bending and welding often makes it difficult to guarantee the dimensional and geometric tolerances of the welded cylinders, resulting in significant deviations from actual requirements and failing to achieve the necessary precision. While using specialized equipment to roll and weld cylinders yields high precision, the equipment cost is also high. Therefore, those skilled in the art desire a cylinder welding fixture that can achieve higher precision in cylinder rolling while maintaining a simple structure and lower production costs. Utility Model Content

[0003] The main purpose of this utility model is to propose a cylindrical welding fixture, which aims to solve the technical problem of low precision after welding of cylindrical tubes made of thin plates in the prior art.

[0004] To achieve the above objectives, this utility model proposes a cylindrical welding fixture, including a support shaft, an inner shaping component, and an outer shaping component. The inner shaping component is fixed to the outer periphery of the support shaft, and the outer shaping component is spaced around the outer periphery of the inner shaping component. A cylindrical object can be placed between the inner and outer shaping components. The outer surface of the inner shaping component is used to support and shape the inner surface of the cylindrical object, and the inner surface of the outer shaping component is used to hold and shape the outer surface of the cylindrical object. The outer shaping component has a welding space for allowing the welding seam of the cylindrical object to pass through.

[0005] When rolling a cylinder, the thin plate is first wrapped around the outside of the inner shaping component. The inner shaping component can shape and size the cylinder from the inside. Then, the outer shaping component is used to hold and fix the thin plate from the outside. At the same time, the welding space allows the weld seam of the cylinder to be exposed without affecting the welding. The thin plate is pressed tightly against the inner shaping component, maintaining the required shape and size of the cylinder during the welding process. This reduces the deformation of the cylinder during the welding process, improves the accuracy of the cylinder after welding, and the structure of the cylinder welding fixture is relatively simple, resulting in lower production costs.

[0006] Preferably, the inner shaping component includes a plurality of circumferentially arranged inner arc-shaped positioning plates, which are fixedly connected to the support shaft, and the plurality of inner arc-shaped positioning plates can jointly support and shape the inner side surface of the cylinder.

[0007] Multiple inner arc-shaped positioning plates are arranged circumferentially to jointly support and shape the inner side of the cylinder. The processing difficulty and cost of the inner shaping components can be reduced by processing and combining multiple inner arc-shaped positioning plates separately.

[0008] Preferably, a plurality of support bars are fixed on the support shaft, and a connecting bar is fixed on the inner side of the inner arc-shaped positioning plate, wherein the plurality of support bars and the connecting bars of the plurality of inner arc-shaped positioning plates are fixedly connected in a one-to-one correspondence.

[0009] Preferably, the support bar is provided with a first positioning hole, the connecting bar is provided with a second positioning hole that matches the first positioning hole, and the cylindrical welding fixture further includes a positioning pin, which is inserted into the first positioning hole and the second positioning hole.

[0010] Positioning pins can be inserted into the first and second positioning holes to improve the accuracy of the relative position when the support bar and connecting bar are connected. The inner arc-shaped positioning plate can maintain a more accurate installation position and improve the accuracy of the cylinder.

[0011] Preferably, the support bar has two first positioning holes, the connecting bar has two second positioning holes, and the positioning pins are inserted into the two first positioning holes and the two second positioning holes in a one-to-one correspondence. The support bar also has a first mounting hole, and the connecting bar also has a second mounting hole. The first mounting hole and the second mounting hole are locked and fixed by mounting screws.

[0012] The two first positioning holes and two second positioning holes can further improve the positioning accuracy of the inner arc-shaped positioning plate; the support strip and the connecting strip are locked and fixed by the mounting screws connected by the first mounting holes and the second mounting holes, and the fixing structure is relatively simple.

[0013] Preferably, the outer shaping component includes a first shaping half-ring and a second shaping half-ring, the first shaping half-ring and the second shaping half-ring are arranged facing each other and sleeved on both sides of the outer periphery of the inner shaping component, the first shaping half-ring and the second shaping half-ring are detachably connected, and the welding space is provided between the end of the first shaping half-ring and the end of the second shaping half-ring.

[0014] The first and second shaping semi-rings can be combined into a ring. After the thin plate is wrapped around the inner shaping component, the first and second shaping semi-rings can be installed and hold the thin plate from both sides, which facilitates the installation of the thin plate and the outer shaping component holding the thin plate. After welding, the first and second shaping semi-rings can be disassembled and separated from both sides, making it easy to remove the cylinder.

[0015] Preferably, the first shaping semi-ring includes a first arc-shaped shaping plate, and the second shaping semi-ring includes a second arc-shaped shaping plate. The inner surfaces of the first and second arc-shaped shaping plates are used to hold and shape the outer surfaces of the cylinder. A first locking block is fixed to the outer side of the first arc-shaped shaping plate, and the first locking block has a first locking hole. A second locking block is fixed to the outer side of the second arc-shaped shaping plate, and the second locking block has a second locking hole that matches the first locking hole. The first locking hole and the second locking hole are locked and fixed by a locking screw.

[0016] The first and second arc-shaped shaping plates are used to hold and tighten the cylinder. The first and second arc-shaped shaping plates can be locked and fixed by passing a locking screw through the first locking hole on the first locking block and the second locking hole on the second locking block. The structure is relatively simple.

[0017] Preferably, a first arc-shaped reinforcing strip is fixed to the outer side of the first arc-shaped shaping plate, and a second arc-shaped reinforcing strip is fixed to the outer side of the second arc-shaped shaping plate. The first and second arc-shaped reinforcing strips can respectively improve the strength of the first and second arc-shaped shaping plates, making the cylinder fit more closely to the inner shaping component and improving the accuracy of the cylinder.

[0018] Preferably, the cylindrical welding fixture further includes a bracket, the support shaft is laterally disposed on the bracket and rotatably connected to the bracket, and the support shaft is detachably connected to the bracket.

[0019] The support shaft and inner shaping component are horizontally mounted on the bracket and can rotate at different angles. This allows operators to easily adjust the thin plate and install the outer shaping component during installation, and also facilitates rotation to the appropriate position during welding, making installation and welding convenient. After welding the cylinder, the support shaft, inner shaping component, and cylinder can be removed, and the cylinder can be taken out from one end of the support shaft to avoid the bracket interfering with the removal of the cylinder.

[0020] Preferably, the bracket is provided with two support components, which can support both ends of the support shaft respectively. The inner shaping component is disposed between the two support components. Each support component includes two support rollers, which are rotatably connected to the bracket. The two support rollers are arranged radially along the support shaft, and the upper side between the two support rollers can support the support shaft.

[0021] The support shaft is placed on the upper side between two supporting rollers, which allows the support shaft to rotate and facilitates its installation and removal. The structure is relatively simple. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the cylindrical welding fixture of this utility model;

[0024] Figure 2 This is a schematic diagram of the cylindrical welding fixture of this utility model when fixing the cylindrical cylinder;

[0025] Figure 3 This is an exploded structural diagram of the support shaft and the inner arc-shaped positioning plate of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the outer shaping component of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the support shaft of this utility model when it is placed on the bracket.

[0028] In the attached diagram: 1-Support shaft, 11-Support bar, 111-First positioning hole, 112-First mounting hole, 12-Positioning pin, 13-Mounting screw, 2-Inner shaping component, 21-Inner arc-shaped positioning plate, 22-Connecting bar, 221-Second positioning hole, 222-Second mounting hole, 3-Outer shaping component, 31-Welding space, 32-First shaping semi-ring, 321-First arc-shaped shaping plate, 322-First locking block, 3221-First locking hole, 323-First arc-shaped reinforcing bar, 33-Second shaping semi-ring, 331-Second arc-shaped shaping plate, 332-Second locking block, 3321-Second locking hole, 333-Second arc-shaped reinforcing bar, 34-Locking screw, 4-Cylinder, 41-Weld seam, 5-Bracket, 51-Supporting component, 511-Supporting roller.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] like Figures 1 to 5 As shown, a cylindrical welding fixture includes a support shaft 1, an inner shaping component 2, and an outer shaping component 3. The inner shaping component 2 is fixed to the outer periphery of the support shaft 1, and the outer shaping component 3 is spaced around the outer periphery of the inner shaping component 2. A cylindrical cylinder 4 can be placed between the inner shaping component 2 and the outer shaping component 3. The outer surface of the inner shaping component 2 is used to support and shape the inner surface of the cylindrical cylinder 4. The outer periphery of the inner shaping component 2 is adapted to the shape and size of the inner surface of the desired cylindrical cylinder 4. The inner surface of the outer shaping component 3 is used to hold and shape the outer surface of the cylindrical cylinder 4. The outer periphery of the outer shaping component 3 is adapted to the shape and size of the outer surface of the desired cylindrical cylinder 4. A welding space 31 is provided on the outer shaping component 3, which is used to allow the weld seam 41 of the cylindrical cylinder 4 to pass through.

[0034] When rolling the cylinder 4, the thin plate is first wrapped around the outside of the inner shaping component 2. The inner shaping component 2 can shape the cylinder 4 in shape and size from the inside. Then, the outer shaping component 3 is used to hold and fix the thin plate on the outside. At the same time, the welding space 31 allows the exposed welding seam 41 of the cylinder 4 to not affect the welding, so that the thin plate is close to the inner shaping component 2. During the welding process, the required shape and size of the cylinder 4 are maintained, thereby reducing the deformation of the cylinder 4 during the welding process and improving the accuracy of the cylinder 4 after welding. Moreover, the structure of the cylinder welding fixture is relatively simple and the production cost is low.

[0035] In some specific embodiments, the inner shaping component 2 includes a plurality of circumferentially arranged inner arc-shaped positioning plates 21, which are fixedly connected to the support shaft 1. The plurality of inner arc-shaped positioning plates 21 can jointly support and shape the inner side of the cylinder 4.

[0036] Multiple inner arc-shaped positioning plates 21 are arranged circumferentially to jointly support and shape the inner side of the cylinder 4. By processing and combining multiple inner arc-shaped positioning plates 21 separately, the processing difficulty and cost of the inner shaping component 2 can be reduced. In addition, cylinders 4 of different sizes can be rolled by changing inner arc-shaped positioning plates 21 of different shapes and sizes.

[0037] Furthermore, referring to Figure 3 Multiple support bars 11 are fixed on the support shaft 1, and connecting bars 22 are fixed on the inner side of the inner arc-shaped positioning plate 21. The multiple support bars 11 are fixedly connected to the connecting bars 22 of the multiple inner arc-shaped positioning plates 21 in a one-to-one correspondence. The support shaft 1 and the inner arc-shaped positioning plate 21 are connected by the support bars 11 and the connecting bars 22, which simplifies the connection structure between the support shaft 1 and the inner arc-shaped positioning plate 21 and reduces the manufacturing cost and weight of the cylindrical welding fixture.

[0038] Furthermore, the support bar 11 is provided with a first positioning hole 111, and the connecting bar 22 is provided with a second positioning hole 221 that matches the first positioning hole 111. The cylindrical welding fixture also includes a positioning pin 12, which is inserted into the first positioning hole 111 and the second positioning hole 221.

[0039] Positioning pins 12 can be inserted into the first positioning hole 111 and the second positioning hole 221, which can improve the accuracy of the relative position when the support bar 11 and the connecting bar 22 are connected. The inner arc-shaped positioning plate 21 can maintain a more accurate installation position and improve the accuracy of the cylinder 4.

[0040] Furthermore, the support bar 11 is provided with two first positioning holes 111, and the connecting bar 22 is provided with two second positioning holes 221. Positioning pins 12 are inserted into the two first positioning holes 111 and the two second positioning holes 221 in a one-to-one correspondence. The support bar 11 is also provided with a first mounting hole 112, and the connecting bar 22 is also provided with a second mounting hole 222. The first mounting hole 112 and the second mounting hole 222 are locked and fixed by mounting screws 13.

[0041] The two first positioning holes 111 and two second positioning holes 221 further improve the positioning accuracy of the inner arc-shaped positioning plate 21. The support bar 11 and the connecting bar 22 are locked and fixed by the mounting screw 13 connected to the first mounting hole 112 and the second mounting hole 222, which is a relatively simple fixing structure. The first mounting hole 112 and the second mounting hole 222 can both be through holes, and the mounting screw 13 can be locked by connecting the nut; or one of the first mounting hole 112 and the second mounting hole 222 can be a through hole and the other can be a screw hole, and the mounting screw 13 can also be locked by connecting to the screw hole.

[0042] In some specific embodiments, reference is made to Figure 4The outer shaping component 3 includes a first shaping semi-ring 32 and a second shaping semi-ring 33. The first shaping semi-ring 32 and the second shaping semi-ring 33 are arranged facing each other and are fitted on both sides of the outer periphery of the inner shaping component 2. The first shaping semi-ring 32 and the second shaping semi-ring 33 are detachably connected. A welding space 31 is provided between the end of the first shaping semi-ring 32 and the end of the second shaping semi-ring 33.

[0043] The first shaping semi-ring 32 and the second shaping semi-ring 33 can be combined into a ring. After the thin plate is wrapped around the inner shaping component 2, the first shaping semi-ring 32 and the second shaping semi-ring 33 can be installed and hold the thin plate from both sides, which facilitates the installation of the thin plate and the outer shaping component 3 holding the thin plate. After welding, the first shaping semi-ring 32 and the second shaping semi-ring 33 can be disassembled and separated from both sides, and the cylinder 4 can be easily removed.

[0044] Furthermore, the first shaping semi-ring 32 includes a first arc-shaped shaping plate 321, and the second shaping semi-ring 33 includes a second arc-shaped shaping plate 331. The inner side of the first arc-shaped shaping plate 321 and the inner side of the second arc-shaped shaping plate 331 are both used to hold and shape the outer side of the cylindrical cylinder 4. A first locking block 322 is fixed on the outer side of the first arc-shaped shaping plate 321. The first locking block 322 is provided with a first locking hole 3221. A second locking block 332 is fixed on the outer side of the second arc-shaped shaping plate 331. The second locking block 332 is provided with a second locking hole 3321 that matches the first locking hole 3221. The first locking hole 3221 and the second locking hole 3321 are locked and fixed by a locking screw 34.

[0045] The first arc-shaped shaping plate 321 and the second arc-shaped shaping plate 331 are used to adhere to and hold the cylindrical cylinder 4. A locking screw 34 passes through the first locking hole 3221 on the first locking block 322 and the second locking hole 3321 on the second locking block 332 to lock and fix the first arc-shaped shaping plate 321 and the second arc-shaped shaping plate 331 in place. The structure is relatively simple. Both the first locking hole 3221 and the second locking hole 3321 can be through holes, and the locking screw 34 can be connected to a nut for locking; alternatively, one of the first locking hole 3221 and the second locking hole 3321 can be a through hole, and the other a screw hole, with the locking screw 34 connected to the screw hole for locking.

[0046] Furthermore, a first arc-shaped reinforcing strip 323 is fixed to the outer side of the first arc-shaped shaping plate 321, and a second arc-shaped reinforcing strip 333 is fixed to the outer side of the second arc-shaped shaping plate 331. The first arc-shaped reinforcing strip 323 and the second arc-shaped reinforcing strip 333 can respectively improve the strength of the first arc-shaped shaping plate 321 and the second arc-shaped shaping plate 331, making the cylinder 4 fit more closely to the inner shaping component 2 and improving the accuracy of the cylinder 4.

[0047] In some specific embodiments, reference is made to Figure 5The cylindrical welding fixture also includes a bracket 5, with a support shaft 1 horizontally mounted on the bracket 5 and rotatably connected to the bracket 5. The support shaft 1 and the bracket 5 are detachably connected.

[0048] The support shaft 1 and the inner shaping component 2 are horizontally mounted on the bracket 5 and can rotate at different angles. This allows operators to easily adjust the thin plate and install the outer shaping component 3 by rotating it at different angles during installation, and also facilitates rotation to the appropriate position during welding, making installation and welding convenient. After welding the cylinder 4, the support shaft 1, the inner shaping component 2, and the cylinder 4 can be removed, and the cylinder 4 can be taken out from one end of the support shaft 1 to prevent the bracket 5 from affecting the removal of the cylinder 4.

[0049] Furthermore, the bracket 5 is provided with two support components 51, which can support both ends of the support shaft 1 respectively. The inner shaping component 2 is located between the two support components 51. The support component 51 includes two support rollers 511, which are rotatably connected to the bracket 5. The two support rollers 511 are arranged radially along the support shaft 1, and the upper side between the two support rollers 511 can support the support shaft 1.

[0050] The support shaft 1 is placed on the upper side between the two supporting rollers 511, which allows the support shaft 1 to rotate and facilitates the installation and removal of the support shaft 1. The structure is relatively simple.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cylindrical welding fixture, characterized in that, The device includes a support shaft (1), an inner shaping component (2), and an outer shaping component (3). The inner shaping component (2) is fixed to the outer periphery of the support shaft (1), and the outer shaping component (3) is spaced around the outer periphery of the inner shaping component (2). A cylinder can be placed between the inner shaping component (2) and the outer shaping component (3). The outer side of the inner shaping component (2) is used to support and shape the inner side of the cylinder, and the inner side of the outer shaping component (3) is used to hold and shape the outer side of the cylinder. The outer shaping component (3) is provided with a welding space (31), which is used to allow the weld seam of the cylinder to pass.

2. The cylindrical welding fixture as described in claim 1, characterized in that, The inner shaping component (2) includes multiple circumferentially arranged inner arc-shaped positioning plates (21), which are fixedly connected to the support shaft (1). The multiple inner arc-shaped positioning plates (21) can jointly support and shape the inner side of the cylinder (4).

3. The cylindrical welding fixture as described in claim 2, characterized in that, Multiple support bars (11) are fixed on the support shaft (1), and a connecting bar (22) is fixed on the inner side of the inner arc-shaped positioning plate (21). The multiple support bars (11) and the connecting bars (22) of the multiple inner arc-shaped positioning plates (21) are fixedly connected one-to-one.

4. The cylindrical welding fixture as described in claim 3, characterized in that, The support bar (11) is provided with a first positioning hole (111), and the connecting bar (22) is provided with a second positioning hole (221) that matches the first positioning hole (111). The cylindrical welding fixture also includes a positioning pin (12), which is inserted into the first positioning hole (111) and the second positioning hole (221).

5. The cylindrical welding fixture as described in claim 4, characterized in that, The support bar (11) is provided with two first positioning holes (111), and the connecting bar (22) is provided with two second positioning holes (221). The positioning pins (12) are inserted into the two first positioning holes (111) and the two second positioning holes (221) in a one-to-one correspondence. The support bar (11) is also provided with a first mounting hole (112), and the connecting bar (22) is also provided with a second mounting hole (222). The first mounting hole (112) and the second mounting hole (222) are locked and fixed by mounting screws (13).

6. The cylindrical welding fixture as described in claim 1, characterized in that, The outer shaping component (3) includes a first shaping half-ring (32) and a second shaping half-ring (33). The first shaping half-ring (32) and the second shaping half-ring (33) are arranged facing each other and are fitted on both sides of the outer periphery of the inner shaping component (2). The first shaping half-ring (32) and the second shaping half-ring (33) are detachably connected. The welding space (31) is provided between the end of the first shaping half-ring (32) and the end of the second shaping half-ring (33).

7. The cylindrical welding fixture as described in claim 6, characterized in that, The first shaping semi-ring (32) includes a first arc-shaped shaping plate (321), and the second shaping semi-ring (33) includes a second arc-shaped shaping plate (331). The inner side of the first arc-shaped shaping plate (321) and the inner side of the second arc-shaped shaping plate (331) are used to hold and shape the outer side of the cylindrical shell (4). A first locking block (322) is fixed on the outer side of the first arc-shaped shaping plate (321). A first locking hole (3221) is provided on the first locking block (3221). A second locking block (332) is fixed on the outer side of the second arc-shaped shaping plate (331). A second locking hole (3321) is provided on the second locking block (3321) that matches the first locking hole (3221). The first locking hole (3221) and the second locking hole (3321) are locked and fixed by a locking screw (34).

8. The cylindrical welding fixture as described in claim 7, characterized in that, A first arc-shaped reinforcing strip (323) is fixed to the outer side of the first arc-shaped shaping plate (321), and a second arc-shaped reinforcing strip (333) is fixed to the outer side of the second arc-shaped shaping plate (331).

9. The cylindrical welding fixture as described in claim 1, characterized in that, The cylindrical welding fixture also includes a bracket (5), and the support shaft (1) is horizontally disposed on the bracket (5) and rotatably connected to the bracket (5). The support shaft (1) and the bracket (5) are detachably connected.

10. The cylindrical welding fixture as described in claim 9, characterized in that, The bracket (5) is provided with two support components (51), which can support the two ends of the support shaft (1) respectively. The inner shaping component (2) is located between the two support components (51). The support component (51) includes two support rollers (511). The support rollers (511) are rotatably connected to the bracket (5). The two support rollers (511) are arranged radially along the support shaft (1). The upper side between the two support rollers (511) can support the support shaft (1).

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